A new technique of combining accretion by cyclone separator and scattertube for tailings dams

被引:3
|
作者
Liu, HX [1 ]
Li, N
Liao, X
Gong, JL
Fang, FH
机构
[1] Changsha Univ Sci & Technol, Inst Geotech Engn, Changsha 410076, Peoples R China
[2] Xian Univ Technol, Inst Geotech Engn, Xian 710048, Peoples R China
[3] Commun Dept Hunan Prov, Changsha 410011, Peoples R China
来源
JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY | 2004年 / 11卷 / 02期
关键词
tailings dams; combining accretion; cyclone separator; scattertube; upstream raising method;
D O I
10.1007/s11771-004-0039-9
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
A new technique of combining accretion by cyclone separator and scattertube for tailings dams was developed according to laboratory experiment, model experiment and spot experiment technology. Three tailings dams were successfully constructed by the new technique. The results of engineering geological exploration, static and dynamic test and stability analysis on Baizhishan tailings dams prove that the new technique improves structure and stability of the dams and working conditions compared with the traditional technique. The thin layers of fine-grained soils are greatly reduced, fine tailings sand is solid to make the dam stable and seepage conditions are well improved; the immersing line of the dam descends. In addition, the stability and liquefaction resistance of tailings dams are strengthened remarkably. The interior stress is compressive stress, stress level of every element is less than 1.0 and safety coefficient of every element is greater than 1.0. The safety coefficient against liquefaction of every element of tailings dams is greater than 1.5 according to the analysis of seismic response by finite element method.
引用
收藏
页码:185 / 191
页数:7
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